[NETFILTER]: Mark hooks __read_mostly

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index c91725a..cd2d845 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -185,7 +185,7 @@
 
 /* Connection tracking may drop packets, but never alters them, so
    make it the first hook. */
-static struct nf_hook_ops ipv4_conntrack_ops[] = {
+static struct nf_hook_ops ipv4_conntrack_ops[] __read_mostly = {
 	{
 		.hook		= ipv4_conntrack_defrag,
 		.owner		= THIS_MODULE,